PowerVR SGX543MP2 vs PowerVR SGX544MP2 vs PowerVR SGX554MP4

PowerVR SGX543MP2

The PowerVR SGX543MP2 (series 5XT) is an integrated graphics card for ARM based SoCs. It is e.g. used in the Apple A5 (iPhone 4s and iPad 2) and offers 8 unified shader cores that support OpenGL ES 2.0.

PowerVR SGX544MP2

The PowerVR SGX544MP2 is a integrated graphics card for tablets and smartphones (often in ARM based SoCs). It offers 2 clusters with each 4 dedicated pixel- and 2 vertex shader. The card supports DirectX 9_3 and OpenGL ES 2.0 and is used in Android based tablets and smartphones. The clock speed differs in the used SoC. E.g. in the Clovertrail+ SoCs the GPU can be clocked at 300 MHz in the Atom Z2520, 400 MHz in the Z2560 and 533 MHz in the Atom Z2580 (source Intel slide).

PowerVR SGX554MP4

The PowerVR SGX554MP4 (series 5XT) is an integrated graphics card usually used in ARM based SoCs. It is e.g. used in the Apple A6X (iPad 4) SoC. It offers 4 graphics cores with 8 SIMDs each and is able to reach 76.8 GLOPs at 300 MHz. The GPU itself supports OpenGL ES 2.0, DirectX9 and OpenCL 1.1. In the Apple A6X the GPU cores are positioned near the two 64 Bit memory controllers leading to a very good memory bandwidth at the time.

Sources: iPad 4 review, Anandtech